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    calloc
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    Syntax:
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  <pre class="syntax-box">
  #include &lt;stdlib.h&gt;
  void* calloc( size_t num, size_t size );
</pre>

  <p>The calloc() function returns a pointer to space for an array of
  <em>num</em> objects, each of size <em>size</em>. The newly allocated
  memory is initialized to zero.</p>

  <p>calloc() returns <strong>NULL</strong> if there is an error.</p>

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